1990 - Grupo Carso goes public and its companies merge. Grupo Carso acquires Telmex, the newly denationalized telecommunications monopoly, in a venture with Southwestern Bell, France Telecom and several Mexican investors. Carso Global Telecom is created as Telmex's holding company. Slim also acquires mobile telecom company Radiomovil Dipsa, a subsidiary of Telmex, and renames it Telcel.

1994 - Founds Museo Soumaya, a non-profit art museum named after his wife.

March 14, 1994 - Slim's cousin, financier Harp Helu, is kidnapped. The billionaire is released in June after the family agrees to pay an undisclosed amount, which may have been an almost $30 million ransom.

2005 - After acquiring a 13% stake in MCI, Slim sells off stake to Verizon Communications Corp. for $1.1 billion.

March 2007 - Slim pledges $6 billion to his charitable foundations.

May 2007 - Founds the Carlos Slim Health Institute, a non-profit that aims to make health care affordable and accessible in Latin America, through his Carlos Slim Foundation.

December 2007 - Unable to turn CompUSA around, Slim sells it to a restructuring firm. The retailer shuts down most of its stores and its remaining assets are sold off.

2008-2009 - Buys a nearly 7% stake in the New York Times, and invests $250 million into the company via a six-year lending agreement.

2010-2013 - Ranked the world's richest man by Forbes four years in a row.

2011 - Opens a new Museo Soumaya facility in Mexico City. The museum is designed by Slim's son-in-law, architect Fernando Romero.

July 2014 - While attending a business conference, Slim proposes the idea of an 11-hour per day, 33-hour work week. He says the three-day work week would improve quality of life.

January 14, 2015 - Slim exercises warrants to acquire 16 million more shares of the New York Times, making him the company's largest individual shareholder, with an almost 17% stake.

June 2015 - Slim's TV production studio, Ora TV, drops a partnership on a project with Donald Trump after Trump says in his presidential campaign launch that some Mexicans crossing the border into the United States are "rapists."

January 18, 2017 - Slim announces plans to launch Nuestra Vision, a television channel tailored to Mexicans living in the United States.

January 27, 2017 - Slim offers to help Mexico negotiate with US President Donald Trump after seeing the national response Mexico has had in facing the new US government. The billionaire praises Trump's negotiation skills and says the US president wants to "transform the United States" and there will to be "positive" changes for those in Mexico.

March 2018 - He and his family rank seventh on Forbes' 2018 list of the world's billionaires, with a net worth of $67.1 billion.